Operating-roll for leather-working machines.



No. 710402. Patented Sept; 30, I902.

A.F..JONES.

OPERATING ROLL FDR LEATHER WORKING MACHINES.

(Application filed J's-n. 9, 1902.)

(No Model.)

ufii/nessea:

UNITE STATES PATENT OFFICE.

ALBERT F. JONES, OF SALEM, MASSACHUSETTS.

OPERATING-ROLL. FOR' LEATHER.-WORK|NG MACHINES.

SPECIFIGATION forming part of Letters Patent No. 710,102, datedSeptember 30, 1902.

Application filed January 9. 19021 Serial No. 89,016- (No modeLl To allwhom, it TIT/01y concern.-

Beit known thatl, ALBERT F.-JONES, a subject of the King of GreatBritain, and a resident of Salem, county of Essex, State ofMassachusetts, have invented an Improvement in Operating-Rolls forLeatherorking Machines, of which the following description, inconnection with the accompanying drawings, is a specification, likeletters on the drawings representing like parts.

This invention relates to operating-rolls for leather-working machines,and has forits object to improve the construction of such rolls wherebythey are especially adapted for applying liquid material to or workingthe same into a skinsuch, for instance, as a coloring or seasoningmaterial or glycerin or oil.

The operating-roll embodying thi s invention has helically-arrangedyielding ribs, the contact-faces of which are composed of felt or anyequivalent material adapted for (-onveying, liquid materialto anddepositing it upon or working it into'a skin, and said ribs arepreferably made quite wide and disposed on the roll with narrow spacesbetween them. There will be two sets of these helically-arranged ribs onthe roll which extend inopposite ways from a transverse plane throughthe roll. The helical ribs each comprise, essentially, a set ofspringssuch, for instance, as spiral springs-disposed on the rollapproximately radial to its axis and projecting a short distance and afelt or equivalent covering for said springs. Suitable means'will beprovided forconfining thesprings and for holding them relativelydisposed, and suitable means will also be provided for holding the feltcovering in proper position.

Herein the term felt covering is used to designate a covering for thesprings having the capability of conveying liquid material to anddepositing it upon or working it into a I skin.

Figure 1 shows in front elevation an operating-roll for leather-workingmachines embodying this invention. Fig. 2 is an enlarged detail of aportion of the roll, the parts comprising the helical ribs beingremoved; and Fig. 3 is a cross-section of a portion of theoperating-roll, taken on the dotted line 3 3, Fig. 1.

In the manufacture of the operating-roll,

which is herein shown for the purpose of illustrating this invention, acylindrical body or roll a of wood or other suitable material isemployed, which will be made of any suitable length and diameter. Thecylindrical body or roll a is provided with a number of sockets a, whichare formed therein of any desirable depth and preferably directed in aline approximately radial to the axis of the roll. The sockets a will bearranged in sets helically arranged around the roll, and there may beone or a number of rows of sockets in each helically-arranged set, andsaid sockets will be located veryclose together. As herein shown, eachset has three rows of sockets.

Short spiral springs a are placed in these sockets, said springs beingmade long enough to project a short distance beyond the face of therolla, so that there will be provided a number of sets of springs, eacharranged helically around the roll. These springs serve as andconstitutea yielding foundation for the ribs. Edge strips a a are provided at eachside of each set of helically-arranged springs,

which will be composed of narrow strips of wood or other material andwhich will be secured to the roll aby any suitable means. These edgestrips will project a short distance beyond the face of the roll a, andas they are disposed at opposite sides of each set of springs they willlikewise be helically arranged around or about the roll. The springs ofeach set will be confined and held relatively disposed by a strip a ofleather or canvas or any other suitable flexible material which overliesthe springs and edge strips and which is preferably attached at itsedges to said edge strips a (1 These helically-arranged sets of springsproperly confined and held relatively disposed are covered by means ofa'felt covering aiand herein astrip of feltis shown as said covering,which is made wider. than the strip a, so as to cover saidstrip andfurnish edge portions which are turned down over the edge strips (1. aAs a means of detachably securing said felt coverings in proper positiona wedge-shaped strip a is wedged into the narrow space between theoverturned edges of two of the adjacent felt coveringsi. e., between twoadjacent edge strips a a 'and said strips (1. will be screwed orotherwise attached to the roll a.

It is obvious that other means may be employed for confining the springsand holding them relatively disposed and also other means maybe employedfor detachably securing the felt coverings in place without departingfrom the spirit and scope of this invention.

I claim 1. In a leather-Working machine, an operating-roll havinghelically-arranged yielding ribs, each comprising a set of springsprojecting from the roll and a felt covering therefor, substantially asdescribed.

2. In a leather-working machine, an operating-roll havinghelically-arranged yielding ribs, each comprising a set of springsseated in sockets in the roll and projecting therefrom, and a feltcovering therefor, substantially as described.

3. In a leather-working machine, an operating-roll havinghelically-arranged yielding ribs, each comprising a set of springsprojecting from a roll, means for confining said springs and for holdingthem relatively disposed, and, a felt covering therefor, substantiallyas described.

4. In a leather-Working machine, an operating-roll havinghelically-arranged yielding ribs, each comprising a set of springsprojecting from the roll, edge strips for said set of springs, and afelt covering inclosing said springs and edge strips, substantially asdescribed.

5. In a leather-working machine, an operati ngroll having,helically-arra nged ribs,each comprising a set of springs projectingtherefrom and a felt covering therefor and means for detachably securingsaid felt covering, substantially as described.

6. In a leather-working machine, an operating-roll havinghelically-arranged yielding ribs, each comprising a set of springsprojecting from a roll, edg strips for said set of springs, a flexiblestrip superimposed on said springs and edge strips for confining saidsprings and holding them relatively disposed, and a felt covering,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ALBERT F. JONES.

Witnesses:

B. J. NoYEs, H. B. DAVIS.

